From Metric to Topology: Determining Relations in Discrete Space. - Matthew P. Dube; Jordan V. Barrett; Max J. Egenhofer (COSIT, 2015)

Beyond the digital Jordan curve: Unconstrained simple pixel-based raster relations. - Matthew P. Dube; Max J. Egenhofer; Jordan V. Barrett; Noah J. Simpson (J. Comput. Lang., 2019)